These days, lots of people prefer to buy rechargeable batteries as these are more environmentally friendly. For flashlights that will be used closer to home, rechargeable flashlights with docking stations may be the best overall value.
Traditional flashlights are powered by a battery & use conventional light bulbs to produce light. However, within the last0 years a new type of flashlight has hit the market. LED flashlights are increasing in popularity because they do not use as much battery energy as a flashlight with traditional light bulbs.
At lower powers, military inspired tactical flashlight do not generate much heat at all. At the higher powers, however, they can generate heat. You will usually find that high powered flashlights have an aluminum body which is used because of its thermal properties.
Increased Resistance To Impacts – Incandescent flashlights have a wire filament that acts as the light source. Regrettably, these filaments are highly liable to breaking, giving even light falls & weak impacts to the flashlight a chance to break the filament. LED flashlights have no such filament & are thus much more likely to be fine even after drops, impacts, & vibrations.
There are different kinds of switches used on these flashlights. The best way to select the right switch is to find that most closely fits the intended use of the flashlight.